package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import jdk.internal.org.jline.utils.ShutdownHooks;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl implements OrderService {

    //注入OrderMapper
    @Autowired
    private OrderMapper orderMapper;

    //注入OrderDetailMapper
    @Autowired
    private OrderDetailMapper orderDetailMapper;

    //注入AddressBookMapper
    @Autowired
    private AddressBookMapper addressBookMapper;

    //注入ShoppingCartMapper
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    //注入UserMapper
    @Autowired
    private UserMapper userMapper;

    //注入webSocketServer
    @Autowired
    private WebSocketServer webSocketServer;


    //注入地图相关参数
    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;


    @Override
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //异常情况，检查地址是否为空，或者是否超出配送范围
        Long addressBookId = ordersSubmitDTO.getAddressBookId();
        AddressBook address = addressBookMapper.getById(addressBookId);
        if(address == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查送货地址是否超出位置范围
       // checkOutOfRange(address.getCityName()+address.getDistrictName()+address.getDetail());

        //获取购物车并检查购物车是否为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if(list == null || list.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //构建订单数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setPhone(address.getPhone());
        orders.setAddress(address.getDetail());
        orders.setConsignee(address.getConsignee());
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setUserId(userId);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setOrderTime(LocalDateTime.now());
        //插入一条订单数据
        orderMapper.insert(orders);

        //构建订单明细数据(遍历购物车)
        ArrayList<OrderDetail> orderDetails = new ArrayList<>();
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }

        //批量插入订单数据明细
        orderDetailMapper.batchInsert(orderDetails);

        //清空购物车
        shoppingCartMapper.delete(shoppingCart);

        //封住VO返回
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderTime(orders.getOrderTime())
                .orderAmount(orders.getAmount())
                .build();

        return orderSubmitVO;
    }

//    /**
//     * 订单支付
//     *
//     * @param ordersPaymentDTO
//     * @return
//     */
//    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
//        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);
//
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
//
//        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//        vo.setPackageStr(jsonObject.getString("package"));
//
//        return vo;
//    }

    /**
     * 模拟微信支付功能
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );

        //生成空JSON，跳过微信支付流程
        JSONObject jsonObject = new JSONObject();

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        /*      // 模拟支付成功，更新数据库订单状态
        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(ordersPaymentDTO.getOrderNumber(), userId);
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);*/

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息
        HashMap map = new HashMap();
        map.put("type",1);  //1.表示来单提醒，2表示客户催单
        map.put("orderId",ordersDB.getId());
        map.put("content","订单号："+outTradeNo);

        //转为Json字符串
        String json = JSON.toJSONString(map);

        //发送消息
        webSocketServer.sendToAllClient(json);

    }

    @Override
    public PageResult page(int page, int pageSize, Integer status) {
        //开始分页查询
        PageHelper.startPage(page, pageSize);

        //封装orderPageDTO对象
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());

        //根据用户id和状态查询订单
        Page<Orders> pages = orderMapper.page(ordersPageQueryDTO);

        //获取total
        long total = pages.getTotal();
        List<Orders> result = pages.getResult();

        //根据result查询订单明细
        ArrayList<OrderVO> list = new ArrayList<>();
        for (Orders orders : result) {
            Long ordersId = orders.getId();

            //查询订单明细
            List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(ordersId);

            //实体转VO
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(orders, orderVO);
            orderVO.setOrderDetailList(orderDetails);

            //将订单明细添加到list集合中
            list.add(orderVO);
        }

        //封装返回结果
        return new PageResult(total, list);
    }

    /**
     * 根据id查询订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        //根据id查询订单
        Orders orders = orderMapper.getById(id);

        //根据订单id查询订单明细
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orders.getId());

        //封装VO返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    /**
     * 根据id取消订单
     * @param id
     */
    @Override
    public void userCancelById(Long id) {
        //根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        //判断订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //判断订单状态： 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if(ordersDB.getStatus() > 2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //如果订单处于待接单状态，则需退回用户支付金额
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        //更新订单状态,设置取下订单相关信息
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());

        //更新订单
        orderMapper.update(orders);
    }

    @Override
    public void repetition(Long id) {
        //根据id查询订单明细
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);

        //构建shoppingCart数据（拷贝订单明细数据到购物车）
        ArrayList<ShoppingCart> shoppingCarts = new ArrayList<>();
        for (OrderDetail orderDetail : orderDetails) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCart.setUserId(BaseContext.getCurrentId()); //设置用户id
            shoppingCart.setCreateTime(LocalDateTime.now()); //设置创建时间

            //添加到shoppingCarts集合中
            shoppingCarts.add(shoppingCart);
        }

        //批量插入购物车数据库
        shoppingCartMapper.insertBatch(shoppingCarts);
    }

    /**
     * 根据条件查询订单
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开始分页查询
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        //条件查询订单
        Page<Orders> page = orderMapper.page(ordersPageQueryDTO);

        //部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        //封装返回结果
        return new PageResult(page.getTotal(), orderVOList);
    }

    /**
     * 统计各个状态的订单数量
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        //查询订单状态数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        //封装VO返回结果
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        //更新订单状态
        Orders orders = new Orders();
        ordersConfirmDTO.setStatus(Orders.CONFIRMED);
        BeanUtils.copyProperties(ordersConfirmDTO, orders);

        //调用ordersMapper更新
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        //查询订单
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());

        //订单存在，且状态为2：待接单，才能拒单
        if(orders!= null && orders.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            //更新订单状态
            orders = Orders.builder()
                    .id(ordersRejectionDTO.getId())
                    .rejectionReason(ordersRejectionDTO.getRejectionReason())
                    .cancelReason(ordersRejectionDTO.getRejectionReason())
                    .cancelTime(LocalDateTime.now())
                    .status(Orders.CANCELLED).build();

            //调用ordersMapper更新
            orderMapper.update(orders);
        }
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        //查询订单
        Orders orders = orderMapper.getById(ordersCancelDTO.getId());
        //订单存在，且状态为3: 已接单 待派送状态
        if(orders != null && orders.getStatus().equals(Orders.CONFIRMED)){
            //更新订单状态
            orders = Orders.builder()
                    .id(ordersCancelDTO.getId())
                    .cancelReason(ordersCancelDTO.getCancelReason())
                    .status(Orders.CANCELLED).build();
            //调用ordersMapper更新
            orderMapper.update(orders);
        }
    }

    /**
     * 订单派送
     * @param id
     */
    @Override
    public void delivery(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);

        //订单存在，且状态为3: 已接单 待派送状态，才能派送
        if(!(orders != null && orders.getStatus().equals(Orders.CONFIRMED))){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //更新订单状态
        orders = Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS).build();

        //调用ordersMapper更新
        orderMapper.update(orders);
    }

    /**
     * 订单完成
     * @param id
     */
    @Override
    public void complete(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);

        //只有订单存在，且状态为派送中，才能够完成
        if(!(orders != null && orders.getStatus().equals(Orders.DELIVERY_IN_PROGRESS))){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //更新订单状态
        orders = Orders.builder()
                .id(id)
                .deliveryTime(LocalDateTime.now())
                .status(Orders.COMPLETED).build();
        //调用ordersMapper更新
        orderMapper.update(orders);
    }

    /**
     * 客户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        //查询订单
        Orders orders = orderMapper.getById(id);

        //校验订单是否存在
        if(!(orders != null)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        HashMap map = new HashMap();
        map.put("type",2);  //1.表示来单提醒 2.表示客户催单
        map.put("orderId",id);
        map.put("content","订单号："+orders.getNumber());

        //转json
        String json = JSON.toJSONString(map);

        //通过webSocketServer发送消息
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 获得OrderVO集合
     * @param page
     * @return
     */
    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        //自定义VO集合，用于返回
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> orders = page.getResult();
        for (Orders order : orders) {
            //拷贝order相同属性到orderVO
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order, orderVO);
            String orderDishes = getOrderDishesStr(order);
            orderVO.setOrderDishes(orderDishes);
            orderVOList.add(orderVO);
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     * @param order
     * @return
     */
    private String getOrderDishesStr(Orders order) {
        //根据订单id查询菜品信息和数量
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(order.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetails.stream().map(x -> {
            String result = x.getName() + "*" + x.getNumber() + ";";
            return result;
        }).collect(Collectors.toList());

        //将列表合并成单个字符串
        return String.join("", orderDishList);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
